Redirect *.htm to *.php

I am trying find out how to redirect all traffi开发者_如何转开发c on a website from any .htm address to a .php version of the page. I am hoping it will be a .htaccess rule but I have not been able to find anything that quite fits for me yet and I am not the greatest with .htaccess.

Any help greatly appreciated.

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This will do the job in your .htaccess file:

RedirectMatch 301 (.*)\.htm$ $1.php

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RewriteEngine on

RewriteCond %{THE_REQUEST} /([^.]+)\.html [NC]
RewriteRule ^ /%1.php [NC,L,R]

This will redirect file.html to file.php without causing an infinite looping error.